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- W4221162374 abstract "The main aim of this work is to compare two Borel measures thorough their moment matrices using a new notion of smallest and largest generalized eigenvalues. With this approach we provide information in problems as the localization of the support of a measure. In particular, we prove that if a measure is comparable in an algebraic way with a measure in a Jordan curve then the curve is contained in its support. We obtain a description of the convex envelope of the support of a measure via certain Rayleigh quotients of certain infinite matrices. Finally some applications concerning polynomial approximation in mean square are given, generalizing previous results obtained by the authors." @default.
- W4221162374 created "2022-04-03" @default.
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- W4221162374 date "2023-05-01" @default.
- W4221162374 modified "2023-10-03" @default.
- W4221162374 title "Smallest and largest generalized eigenvalues of large moment matrices and some applications" @default.
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- W4221162374 doi "https://doi.org/10.1016/j.jmaa.2022.126959" @default.
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